How to Install Official CM 10.2 Nightly on Samsung Galaxy S2

The official CyanogenMod 10.2 Nightly is now available to be flashed on AT&T Samsung Galaxy S2 model i777. CM 10.2 nightly, based on AOSP Android 4.3 Jelly Bean, will bring tons of new features on your Galaxy S2. Follow this tutorial and upgrade your Samsung Galaxy S2 i777 to the latest Android with CM 10.2 in no time!

Required files: download the official CM 10.2 custom firmware file from here. Also download the Google Apps Package for your smartphone. Save both the files on your computer; do not extract the contents.

Connect your Samsung Galaxy S2 i777 with computer using a USB cable and copy the custom ROM and GApps files on the phone’s SD card.

Disconnect your AT&T SGS2 from computer when the copy is done and power it off.